diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2023-12-04 22:02:30 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-12-11 11:47:15 +0100 |
| commit | 13408c6ae684181d53c870cceddbd3a62ae34c3e (patch) | |
| tree | 0c32ced2bf6b1022247a6307e4e77d76b3f33518 /arch/x86 | |
| parent | 0e3703630bd3fead041a6bfb3a3f2a9891af6c34 (diff) | |
x86/traps: Use current_top_of_stack() helper in traps.c
Use current_top_of_stack() helper in sync_regs() and vc_switch_off_ist()
instead of open-coding the reading of the top_of_stack percpu variable
explicitly.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20231204210320.114429-2-ubizjak@gmail.com
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/traps.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index c876f1d36a81..78b1d1a6ed2c 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -772,7 +772,7 @@ DEFINE_IDTENTRY_RAW(exc_int3) */ asmlinkage __visible noinstr struct pt_regs *sync_regs(struct pt_regs *eregs) { - struct pt_regs *regs = (struct pt_regs *)this_cpu_read(pcpu_hot.top_of_stack) - 1; + struct pt_regs *regs = (struct pt_regs *)current_top_of_stack() - 1; if (regs != eregs) *regs = *eregs; return regs; @@ -790,7 +790,7 @@ asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *r * trust it and switch to the current kernel stack */ if (ip_within_syscall_gap(regs)) { - sp = this_cpu_read(pcpu_hot.top_of_stack); + sp = current_top_of_stack(); goto sync; } |